Sequence of sperm cell surface differentiation and its relationship to exogenous fluid proteins in the ram epididymis.


To study successive surface changes of maturing ram spermatozoa, we determined the 125I-labeling patterns of testicular spermatozoa and of spermatozoa from 10 consecutive regions of the epididymis. Overall, three phases of cell surface transformations are distinguishable: Phase I occurs in the caput epididymidis and it is characterized by a series of rapid… (More)


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